I have two of Sizzle Rides. One is a old 19 inch Sizzle Ride Zildjian to which I've for years and it's pretty cool sounding for riding or crashing. I definly love the 19 inch Armand Ride Zildjian which I use all the time, and even with three rivets it's crash and substain actually is longer the Sizzle Ride.
My bass player hates em though ;-) Used to have a 21 inch Pang cymbal with Rivets that went on forever when crashed. I've also have seen a 20 inch Earth Ride with Rivets as well.
I love sizzles. They get me a nice bit of background sound when you're doing a solo. And mine sounds quite a bit like a half-open hi-hat, so I can keep that sort of sound going using it as a ride, and get some hi-hat footwork in at the same time.
I use a Zidljain 20" Medium Ride with 3 rivets in it. Every drummer seems to like it as they want to buy it! I use it mostly for singer/songwriter stuff but also on some funk gigs as well as it being the obvious choice for my jazz gigs.